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发明名称
Sanitary telephone mouthpiece
摘要
申请公布号
US2288975(A)
申请公布日期
1942.07.07
申请号
US19400365854
申请日期
1940.11.16
申请人
JACOB SIEZ;SHIRLEY GROSSMAN
发明人
SIEZ JACOB;GROSSMAN SHIRLEY
分类号
H04R1/12
主分类号
H04R1/12
代理机构
代理人
主权项
地址
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